OCLC's CORC service consists of two Web-based utilities: the CORC Resource Catalog (RC) and the Pathfinder utility. The RC consists of a generator for creating MARC or Dublin Core bibliographic records for Internet resources as well as a database of such records. The Pathfinder utility features a database of research guides in a Web format and offers a straightforward method to create original research guides. Both elements of the CORC service are well wrought and should be of interest to libraries.